Hi @GeorgiaC ,
The issue i have with amending the invoice is that they are reimbursement of bills, e.g. i receive a mobile bill for this client/customer and pay it and then they pay me back, so i can't amend the original bills, as they are what i paid.
What i do is enter the bill to the mobile company and tick the box saying bill to customer and it auto generates the amount on an invoice i then sent to the customer.
